Many airlines in the US state that passengers “needing an extra seat to maintain comfort” must pay for an adjacent seat. Their thought is that since they can’t sell that seat to another person, the passenger occupying part of that seat needs to foot the bill. And this mode of thought has prevailed through to the current age of air travel.

Some overweight members of the community disagree with that policy, however, suggesting that obesity is a disease and citing discrimination against the disabled. This makes carriers’ policy a violation of the Americans with Disabilities Act (ADA) and technically illegal. So far, the US government has not interceded in this debate.

The Canadian government, on the other hand, has. Earlier this month the Canadian Transportation Agency (CTA) mandated that national carriers cannot charge an overweight passenger extra if he or she requires extra seats. The airlines now have a year to accommodate and integrate these changes into their systems.